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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Work started] (HBASE-8202) MultiTableOutputFormat should support writing to another HBase cluster
Date Tue, 18 Jun 2013 15:46:22 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Work on HBASE-8202 started by Ted Yu.

> MultiTableOutputFormat should support writing to another HBase cluster
> ----------------------------------------------------------------------
>
>                 Key: HBASE-8202
>                 URL: https://issues.apache.org/jira/browse/HBASE-8202
>             Project: HBase
>          Issue Type: Improvement
>          Components: mapreduce
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>         Attachments: 8202-v1.txt
>
>
> This was brought up by David Koch in thread 'hbase.mapred.output.quorum ignored in Mapper
job with HDFS source and HBase sink' where he wanted to import a file on HDFS from one cluster
A (source) into HBase
> tables on a different cluster B (destination) using a Mapper job with an
> HBase sink.
> Here is my analysis:
> MultiTableOutputFormat doesn't extend TableOutputFormat:
> {code}
> public class MultiTableOutputFormat extends OutputFormat<ImmutableBytesWritable, Mutation>
{
> {code}
> Relevant configuration w.r.t. output quorum is setup in TableOutputFormat#setConf():
> {code}
>   public void setConf(Configuration otherConf) {
>     this.conf = HBaseConfiguration.create(otherConf);
>     String tableName = this.conf.get(OUTPUT_TABLE);
>     if(tableName == null || tableName.length() <= 0) {
>       throw new IllegalArgumentException("Must specify table name");
>     }
>     String address = this.conf.get(QUORUM_ADDRESS);
>     int zkClientPort = conf.getInt(QUORUM_PORT, 0);
>     String serverClass = this.conf.get(REGION_SERVER_CLASS);
>     String serverImpl = this.conf.get(REGION_SERVER_IMPL);
>     try {
>       if (address != null) {
>         ZKUtil.applyClusterKeyToConf(this.conf, address);
>       }
> {code}

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